Inking mechanism for printing-presses



H. M. BARBER.

INKING MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED APR. 22, I919.

Patented J une 1, 192G.

k WW /0' unrreo stares HOWARD M. BARBER, F STONINGTON, CONNECTICUT, ASSIGNOR TO 0. B. CO'ITRELL & SONS COMPANY, GF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

INKING MECHANISM FUR PBINTING-PBESSES.

Application filed April 22, 1919.

To (all UILOHL it may concern:

Be it known that I HOWARD M. Bar-mun, a citizen of the United States, and resident of Btonington, in the county of New Londen and State of Connecticut, have invented a new and useful Improvement in linking Mechanism for Printing-Presses, of which the following is a specification.

In inking mechanism the ductor roller,

when in contact with the ink cylinder, is caused to rotate at a high speed. Therefore, when the ductor roller is brought into contact with the intermittently driven slow inovi fountain roll, the ductor roller tends to drive the fountain roll faster than its intended speed, thus obtaining an over-supply of ink.

The object of my invention is to provide novel means for insuring a uniform supply of ink by preventing this throwing ahead of the fountain roll by the ductor roller.

I: practical embodiment of my invention is represented in the accompanying drawings in which,

Figure 1 represents a top plan view of so much of an inking mechanism for printing presses as will give a clear understanding of my invention applied thereto.

Fig. 2 represents a view in side elevation of the parts illustrated in Fig. 1., the parts being in the positions they assume at the beginning of the driving movement.

Fig. 3 represents a similar view with the parts in the positions they assume at the end of the driving movement.

Fig. lrepresents a detail section taken in the plane of the line IV of Fig. 2 looking in the direction of the arrow.

Fig. 5 represents a detail section in the plane of the line V-V of Fig. at, the driving pawl and locking dog being in the positions shown in Figs. 1 and 2.

Fig. 6 represents a similar detail section with the driving pawl and locking dog in the positions shown in Fig. 3.

The ink fountain is denoted by 1, the fountain roll by 2, and its shaft by 3. This shaft has a ratchet at fixed thereto forming part of the fountain roll driving means.

A two armed rocking lever 5, 6 is loosely mounted on the fountain roll shaft 3. The arm 5 carries a spring pressed driving pawl,

7. This pawl 7 is mounted on a stud 8 and a torsion spring 9 serves to yieldingly hold Specification of Letters Patent.

Patented June 1, i fZifi.

Serial No. senses.

the pawl in engagement with the fountain roll ratchet 4.

A s iring pressed two armed locking dog 10, 11 is mounted on a stud 12 carried by the arm 5 of the pawl lever, the torsion spring 13 tending to swing the arm 10 of the dog into the notch 1% in the pawl to lock the pawl to its ratchet.

The arm 6 of the pawl lever is connected by a rod 15 to a crank disk 16 carried by the crank shaft 17, the rod 15 being adjustably secured to the disk for varying the throw of the lever 5, 6. A cam controlled lever 18, 19 is fixed to a rock shaft 20, to which rocl: shaft is also fixed an arm 21 provided with a handle 22, which arm is operated by a cam on the crank shaft 17 through a connecting rod 2-1:, which connecting rod has a stud or roller 25 in engagement with said 'am 23. The stud or roller 25 is held in engagement with the cam 23 and the arm 18 of the cam controlled lever is normally held raised out of engagement with the arm 11 of the locking dog, by spring means 26 interposed between a bracket 27 on the frame and the arm 19 of the said cam controlled lever.

A spring pressed detent 28 is carried by the arm 5 of the pawl lever in position to hold the pawl T out of engagement with its "atchet l when so desired, the pawl being provided with a finger piece 29 for n1anip- 5 ula'ting it.

The due-tor roller 30 is operated in the usual manner, by means not shown herein. to bring the ductor roller into and out of contact with the fountain roll 2.

In operation, presupposing the parts to be in the positions shown in Figs. 1 and 2 at the beginning of the forward stroke. The locking dog 10, 11 has been released from its engagement with the arm 18 of the cam controlled lever ant. the arm 10 of the said dog has been swung into locking engagement with the pawl 7. As the pawl lever is rocked to advance the pawl ratchet and fountain roll, the pawl will be held from riding over the teeth of the ratchet, by the locking dog thus preventing the fountain roll from being driven ahead as the ductor roller comes in Contact therewith. As the pawl approaches the end of the forward stroke, the cam 23 on the crank shaft 17 will. through its connections depress the arm re of ever 18, 19, thus causing the arm trolling lever out of engagement with the dog and thereby allow the dog to swing back into its locking engagement with the driving pawl.

If it is desired to render the mechanism inoperative, in so far as the fountain roll is concerned, this may be accomplished by lifting the driving pawl out of mesh with the ratchet, the spring pressed detent 2-8 serving to hold the pawl in its inoperative position.

The stroke of the pawl lever which forms the rocking support for the pawl may be varied through quite a wide range without in anyway affecting the operation of the locking dog operating means or requiring any adjustment thereof.

It is evident that various changes may be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention and hence I do not wish to limit .myself to the construction herein shown and described, but

hat I claim is:

1. In inking mechanism for printing presses, a fountainroll, a ductor roller, oscillating means for intermittently driving the fountain roll ahead and means for lock ing the driving means to the fountain roll during its forward movement, and for releasing the driving means from the fountain roll during the return movement of the driving means. V

2. In inking mechanism for printing presses, a fountain roll, its ratchet, a ductor roller, means including a pawl engaging the ratchet for driving the fountain roll ahead and means for locking the pawl to the ratchet during its forward stroke, and for releasing the pawl during its return stroke.

3. In inking mechanism for printing presses, a fountain roll, its ratchet, a ductor roller, means including a pawl engaging the ratchet for driving the fountain roll ahead, a dog arranged to lock the pawl to the ratchet during its forward stroke, and means for moving the dog to release the pawl during its return stroke.

4:. In inking mechanism for printing presses, a fountain roll, its ratchet, a ductor roller, a pawl engaging the ratchet for driving the fountain roll ahead, a rocking support for said pawl, a dog carried by said rocking support for locking the pawl to the ratchet during its forward stroke, and

cam controlled means for moving the dog.

to release the pawl during its return stroke.

5.-In inking mechanism for printing 'port for said pawl, a spring pressed dog carried by the rocking support for locking the pawl to the ratchet during its forward stroke and a cam controlled lever having an arm arranged to move and hold the dog out of engagement with its pawl during the return stroke.

6. In inking mechanism for printing presses, a fountain roll, its ratchet, a ductor roller, a pawl engaging the ratchet for driving the fountain roll ahead, a rocking support for said pawl, a spring pressed dog carried by the rocking support for locking the pawl to the ratchet during its forward stroke and a cam controlled lever having an arm arranged to move and hold the dog out of engagement with its pawl during the return stroke, and means for varying the stroke of the rocking support without affecting the operation of said cam controlled lever.

7. In inking mechanism for printing presses, a fountain roll, its ratchet, a ductor roller, a rotary driving shaft, a'pawl engaging the ratchet for driving the fountain roll ahead, a rock lever carrying said pawl and oscillated by said drive shaft, a spring pressed dog carried by said pawl lever for locking the pawl to the ratchet during its forward stroke and a lever also oscillated by said drive shaft and having an arm for moving and holding the locking dog out of engagement with the pawl during the return stroke.

8. In inking mechanism for printing presses, a fountain roll, its ratchet, a ductor roller, a rotary driving shaft, a pawl engaging the ratchet for driving the fountain roll ahead, a rock lever carrying said pawl and oscillated by said driving shaft, a spring pressed dog carried by said pawllever for locking the pawl to the ratchet during its forward stroke and a lever also oscillated by said drive shaft and having an arm for moving and holding the locking dog out of engagement with the pawl during the return stroke, said rotary drive shaft having an adjustable crank motion connection with the pawl lever, whereby the stroke of the pawl lever may be varied without affecting the operation of said locking dog controlling lever. I

HOWARD M. BARBER. 

